5  * SPDX-License-Identifier:	GPL-2.0+
22 #define	CONFIG_SYS_I2C_RTC_ADDR	0x50
25 /* ------------------------------------------------------------------------- */
38 /* ------------------------------------------------------------------------- */
42 	uchar sec, min, hour, mday, wday, mon, cent, year;  in rtc_get()  local
46 		sec	= rtc_read (0x80);  in rtc_get()
47 		min	= rtc_read (0x82);  in rtc_get()
48 		hour	= rtc_read (0x84);  in rtc_get()
49 		mday	= rtc_read (0x86);  in rtc_get()
50 		mon	= rtc_read (0x88);  in rtc_get()
51 		wday	= rtc_read (0x8a);  in rtc_get()
52 		year	= rtc_read (0x8c);  in rtc_get()
53 		cent	= rtc_read (0x92);  in rtc_get()
57 		if ((sec != 59) || (rtc_read(0x80) == sec)){  in rtc_get()
58 			retry = 0;  in rtc_get()
62 	debug ( "Get RTC year: %02x mon: %02x cent: %02x mday: %02x wday: %02x "  in rtc_get()
64 		year, mon, cent, mday, wday,  in rtc_get()
67 	tmp->tm_sec  = bcd2bin (sec  & 0x7F);  in rtc_get()
68 	tmp->tm_min  = bcd2bin (min  & 0x7F);  in rtc_get()
69 	tmp->tm_hour = bcd2bin (hour & 0x3F);  in rtc_get()
70 	tmp->tm_mday = bcd2bin (mday & 0x3F);  in rtc_get()
71 	tmp->tm_mon  = bcd2bin (mon & 0x1F);  in rtc_get()
72 	tmp->tm_year = bcd2bin (year) + bcd2bin(cent) * 100;  in rtc_get()
73 	tmp->tm_wday = bcd2bin (wday & 0x07);  in rtc_get()
74 	tmp->tm_yday = 0;  in rtc_get()
75 	tmp->tm_isdst= 0;  in rtc_get()
77 	debug ( "Get DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",  in rtc_get()
78 		tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,  in rtc_get()
79 		tmp->tm_hour, tmp->tm_min, tmp->tm_sec);  in rtc_get()
81 	return 0;  in rtc_get()
87 	debug ( "Set DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",  in rtc_set()
88 		tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,  in rtc_set()
89 		tmp->tm_hour, tmp->tm_min, tmp->tm_sec);  in rtc_set()
91 	rtc_write (0x9E, 0x00);  in rtc_set()
92 	rtc_write (0x80, 0);	/* Clear seconds to ensure no rollover */  in rtc_set()
93 	rtc_write (0x92, bin2bcd(tmp->tm_year / 100));  in rtc_set()
94 	rtc_write (0x8c, bin2bcd(tmp->tm_year % 100));  in rtc_set()
95 	rtc_write (0x8a, bin2bcd(tmp->tm_wday));  in rtc_set()
96 	rtc_write (0x88, bin2bcd(tmp->tm_mon));  in rtc_set()
97 	rtc_write (0x86, bin2bcd(tmp->tm_mday));  in rtc_set()
98 	rtc_write (0x84, bin2bcd(tmp->tm_hour));  in rtc_set()
99 	rtc_write (0x82, bin2bcd(tmp->tm_min ));  in rtc_set()
100 	rtc_write (0x80, bin2bcd(tmp->tm_sec ));  in rtc_set()
102 	return 0;  in rtc_set()